Home
Class 12
CHEMISTRY
What ammount of dioxygen (in gram) conta...

What ammount of dioxygen (in gram) contains `1.8 xx 10^23` molecules ?

A

`0.960`

B

`96.0`

C

`0.960`

D

`9.60`

Text Solution

Verified by Experts

The correct Answer is:
A
`6.022xx10^(23)` molecules are present in 32 g of `O_(2)`
` :. " " 1.8 xx10^(22)` molecules will be present in
`32/(6.022 xx10^(23))xx1.8 xx10^(22) g`
` = 0.960` g of `O_(2)`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2014

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|58 Videos

  • KARNATAKA CET 2017

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

What amount of dioxygen (in gram) contains 1.8 xx 10^22 molecules ?

Find : 36.8xx10

The number of gram molecules of oxygen in 6.02 xx 10^24 CO molecules is :

The number of gm-molecules of oxygen in 6.02 xx 10^(24) CO molecules is 1 gm-molecule 0.5 gm-molecule 5 gm-molecule 10 gm-molecule

x L of nitrogen at N.T.P. contains 3.0xx10^22 molecules. The number of molecules in x/2 ozone at N.T.P. will be

The rate constant for a reaction is 10.8 xx 10^(-5) mole "litre"^(-1) "sec"^(-1) . The reaction obeys

A sample of a paramagnetic salt contains 2.0 xx 10^(24) atomic dipoles each of dipole moment 1.5 xx10^(-23) JT ^(-1) . The sample is placed under a homogeneous magnetic field of 0.64 T and cooled to a temperature of 4.2 K. The degree of magnetic saturation achieved is equal to 15%. What is the total dipole moment of the sample for a magnetic field of 0.98 T and a temperature of 2.8 K ? ( Assume Curie's law)

How many molecules are there in a 3.46 g sample of hydrogen chloride, HCl? Note: The number of molecules in a sample is related to moles of compound (1 mol HCl = 6.023 xx 10^(23) HCl molecules). Therefore if you first convert grams HCl to moles, then you can convert moles to number of molecules).

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2015-CHEMISTRY
  1. Cryolite is

    Text Solution

    |

  2. Identify 'Q' in the following sequence of reactions :

    Text Solution

    |

  3. What ammount of dioxygen (in gram) contains 1.8 xx 10^23 molecules ?

    Text Solution

    |

  4. The pair of compound which cannot exist together in solution is

    Text Solution

    |

  5. Plot of Maxwell's distribution of velocities is given below : Whi...

    Text Solution

    |

  6. Arrange the following compounds in the increasing order of their acidi...

    Text Solution

    |

  7. In the reaction S + 3/2 O2 to SO3 2x kJ and SO2 + 1/2 O2 to SO3 yk...

    Text Solution

    |

  8. Which of the following is not true?

    Text Solution

    |

  9. Using MOT, compare O2^(+) and O2^(-) species and choose the incorrect ...

    Text Solution

    |

  10. Which of the following compound possesses the " C-H" bond with the low...

    Text Solution

    |

  11. The correct statement is

    Text Solution

    |

  12. Acetic acid is treated with Ca(OH)2 and the product so obtained is sub...

    Text Solution

    |

  13. In the sequence of following reactions : The starting compound ...

    Text Solution

    |

  14. An alkali metal hydride (NaH) reacts with diborane in .A. to give a te...

    Text Solution

    |

  15. Water softening by Clark.s process uses

    Text Solution

    |

  16. One of the following conversion results in the change of hybridization...

    Text Solution

    |

  17. In presence of HCl, H2S results the precipitatiion of Group-2 elements...

    Text Solution

    |

  18. The two electron have the following set of quantum numbers : P = 3,2...

    Text Solution

    |

  19. Orlon has monomeric unit

    Text Solution

    |

  20. Adenosine is an example of

    Text Solution

    |